GIDEON Barry CORRMET Limited

The use of f 316L, 317L stainless steel and Alloy 825 (UNS N08825) material as an alternative to solid CRA material for mechanically clad or lined clad pipe for subsea gas flowlines is becoming more wide-spread in the oil and gas industry, particularly where corrosion resistance / stress corrosion cracking resistance is required for gas containing CO2 at temperatures higher than 130°C. While 316L material show many superior characteristics compared to other grade steels, limitations are associated with the manufacturing and welding of these steels and understanding how the metallurgy may influence the susceptibility to crevice corrosion, pitting corrosion and stress corrosion cracking. The focus of this paper is to report on the findings from a detailed study performed on mechanically clad and lined clad pipe manufactured from materials mentioned above, which is used for the transportation of gas from a gas field located offshore from Western Australia.

Zpět